CN114856835B - Marine diesel engine oil supply timing adjustment transmission device and marine diesel engine - Google Patents
Marine diesel engine oil supply timing adjustment transmission device and marine diesel engine Download PDFInfo
- Publication number
- CN114856835B CN114856835B CN202210603051.8A CN202210603051A CN114856835B CN 114856835 B CN114856835 B CN 114856835B CN 202210603051 A CN202210603051 A CN 202210603051A CN 114856835 B CN114856835 B CN 114856835B
- Authority
- CN
- China
- Prior art keywords
- gear
- camshaft
- diesel engine
- clamping shaft
- connecting shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
- F02D1/16—Adjustment of injection timing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention discloses a marine diesel engine oil supply timing adjustment transmission device and a marine diesel engine, comprising: the camshaft connecting shaft is used for being connected with a camshaft; one side end face of the camshaft driving gear is abutted against the end face of the camshaft connecting shaft; the first clamping shaft is abutted against the end face of the other side of the cam shaft driving gear; the first locking piece is used for locking or unlocking the camshaft connecting shaft and the first clamping shaft, and when the camshaft connecting shaft and the first clamping shaft are locked, the camshaft connecting shaft and the first clamping shaft clamp the camshaft driving gear; when the camshaft connecting shaft and the first clamping shaft are loosened, the camshaft connecting shaft and the camshaft driving gear can rotate relatively; the duplex gear pinion is in meshed transmission with the camshaft driving gear; the duplex gear big gear is connected with the duplex gear small gear; the crankshaft timing gear is arranged on the crankshaft and is in meshing transmission with the large gear of the duplicate gear. The oil supply timing adjustment is simple, the difficulty is low, the oil supply timing correctness can be ensured, the processing difficulty is reduced, and the manufacturing cost is reduced.
Description
Technical Field
The invention relates to the technical field of marine diesel engines, in particular to a marine diesel engine oil supply timing adjustment transmission device. In addition, the invention also relates to a marine diesel engine comprising the marine diesel engine oil supply timing adjusting transmission device.
Background
The marine diesel engine is used as a main power source in the ship transportation industry and plays an important role.
At present, a camshaft driving gear and a duplicate gear are fixed on a corresponding shaft in a pin key, interference fit or multi-bolt hole locking mode, marks are engraved on the camshaft driving gear and the duplicate gear, and the camshaft driving gear and the duplicate gear are adjusted in place and then fixed according to the related marks during assembly, so that the technical level of assembly personnel has strict requirements.
When the oil supply timing needs to be adjusted, the camshaft driving gear and the duplicate gear need to be detached, then the relative position of the camshaft and the crankshaft is adjusted, after the relative position of the camshaft and the crankshaft is adjusted, the camshaft driving gear and the duplicate gear need to be readjusted and installed, in addition, the relative position of the camshaft and the camshaft driving gear needs to be adjusted according to the gear matching, and the oil supply timing is inaccurate easily.
Therefore, in the prior art, the oil supply timing of the marine diesel engine is very complex to adjust, needs to be adjusted by professionals, and is easy to cause inaccurate oil supply timing.
In summary, how to conveniently adjust the oil supply timing of the diesel engine and ensure the accuracy of the oil supply timing is an urgent problem to be solved by those skilled in the art.
Disclosure of Invention
In view of this, the invention aims to provide a marine diesel engine oil supply timing adjustment transmission device, which is convenient to adjust the oil supply timing of a diesel engine and ensures the accuracy of the oil supply timing.
Another object of the present invention is to provide a marine diesel engine including the marine diesel engine fuel supply timing adjustment transmission device, which is convenient for fuel supply timing adjustment and is beneficial to ensuring the accuracy of fuel supply timing.
In order to achieve the above purpose, the invention provides the following technical scheme:
a marine diesel engine fuel supply timing adjustment transmission comprising:
the camshaft connecting shaft is used for being connected with a camshaft;
one side end face of the camshaft driving gear is abutted against the end face of the camshaft connecting shaft;
the first clamping shaft is abutted against the end face of the other side of the cam shaft driving gear;
the first locking piece is used for locking or unlocking the camshaft connecting shaft and the first clamping shaft, and when the camshaft connecting shaft and the first clamping shaft are locked, the camshaft connecting shaft and the first clamping shaft clamp the camshaft driving gear; when the camshaft connecting shaft and the first clamping shaft are loosened, the camshaft connecting shaft and the camshaft driving gear can rotate relatively;
the double-gear pinion is in meshed transmission with the camshaft driving gear;
the duplex gear large gear is connected with the duplex gear small gear;
and the crankshaft timing gear is arranged on the crankshaft and is in meshing transmission with the large gear of the duplicate gear.
Optionally, the camshaft drive gear is provided with a first central bore and the first clamping shaft is provided with a second central bore; the first locking piece penetrates through the first center hole and the second center hole, is in threaded connection with the camshaft connecting shaft, and compresses one end, far away from the camshaft driving gear, of the first clamping shaft.
Optionally, the first locking member comprises:
the double-end stud penetrates through the first center hole and the second center hole and is in threaded connection with the camshaft connecting shaft;
and the locking nut is in threaded connection with one end of the double-end stud far away from the camshaft connecting shaft and is used for compressing one end of the first clamping shaft far away from the camshaft driving gear.
Optionally, the method further comprises:
the bearing block is used for being connected with a frame of the marine diesel engine;
and the bearing is arranged between the bearing seat and the first clamping shaft.
Optionally, a through hole penetrating in the radial direction is formed in a position, corresponding to the bearing, of the first clamping shaft.
Optionally, a side of the bearing seat facing the first locking member is provided with a removable end cap.
Optionally, at least one of the camshaft connecting shaft and the first clamping shaft is provided with a positioning boss, and an outer peripheral portion of the positioning boss is in clearance fit with the first center hole.
Optionally, the method further comprises:
the second clamping shaft is abutted against one side end face of the duplicate gear pinion, and the other side end face of the duplicate gear pinion is abutted against the end face of the duplicate gear bull gear;
the second locking piece is used for locking or unlocking the large gear of the duplicate gear and the second clamping shaft, and when the large gear of the duplicate gear and the second clamping shaft are locked, the large gear of the duplicate gear and the second clamping shaft clamp the small gear of the duplicate gear; when the duplicate gear bull gear and the second clamping shaft are loosened, the duplicate gear pinion gear and the duplicate gear bull gear can rotate relatively.
A marine diesel engine fuel supply timing adjustment transmission comprising:
the camshaft connecting shaft is used for being connected with a camshaft;
the camshaft driving gear is connected with the camshaft connecting shaft;
the double-gear pinion is in meshed transmission with the camshaft driving gear;
the duplex gear big gear is abutted against one side end face of the duplex gear small gear;
the third clamping shaft is abutted against the end face of the other side of the pinion of the duplicate gear;
the third locking piece is used for locking or unlocking the big gear of the duplicate gear and the third clamping shaft, and when the big gear of the duplicate gear and the third clamping shaft are locked, the big gear of the duplicate gear and the third clamping shaft clamp the small gear of the duplicate gear; when the duplicate gear bull gear and the third clamping shaft are loosened, the duplicate gear pinion gear and the duplicate gear bull gear can rotate relatively;
the crankshaft timing gear is arranged on the crankshaft and is in meshing transmission with the large gear of the duplicate gear.
A marine diesel engine comprises an oil supply timing adjustment transmission device, and the oil supply timing adjustment transmission device is any one of the marine diesel engine oil supply timing adjustment transmission devices.
When the marine diesel engine oil supply timing adjustment transmission device provided by the invention normally works, the first locking piece locks the camshaft connecting shaft and the first clamping shaft, so that the camshaft connecting shaft and the first clamping shaft clamp the two side end surfaces of the camshaft driving gear, the connection between the camshaft driving gear and the camshaft connecting shaft is realized, and when the camshaft driving gear rotates, the camshaft driving gear can drive the camshaft connecting shaft and the first clamping shaft to rotate together by virtue of the friction force between the two side end surfaces of the camshaft driving gear and the camshaft connecting shaft and the first clamping shaft respectively. That is, when the crankshaft rotates, the crankshaft timing gear is driven to rotate, the crankshaft timing gear drives the big gear wheel of the duplicate gear to rotate, the big gear wheel of the duplicate gear drives the small gear wheel of the duplicate gear to rotate, the small gear wheel of the duplicate gear drives the camshaft driving gear to rotate, the camshaft driving gear drives the camshaft connecting shaft to rotate, and then the camshaft connecting shaft drives the camshaft to rotate, so that the crankshaft drives the camshaft.
When the oil supply timing of the marine diesel engine needs to be adjusted, the first locking piece loosens the camshaft connecting shaft and the first clamping shaft, and at the moment, the pressing force of the camshaft connecting shaft and the first clamping shaft on the end faces of the two sides of the camshaft driving gear disappears, namely, the connection relation between the camshaft driving gear and the camshaft connecting shaft is released, so that the camshaft connecting shaft and the camshaft driving gear can relatively rotate; in this case, if the crankshaft is rotated, the crankshaft drives the crankshaft timing gear to rotate, the crankshaft timing gear drives the big gear wheel of the duplicate gear to rotate, the big gear wheel of the duplicate gear drives the small gear wheel of the duplicate gear to rotate, the small gear wheel of the duplicate gear drives the camshaft driving gear to rotate, at the moment, the camshaft driving gear rotates relative to the camshaft connecting shaft, and the camshaft connecting shaft keeps the position unchanged; if the camshaft is rotated, the camshaft drives the camshaft connecting shaft to rotate, at the moment, the camshaft connecting shaft rotates relative to the camshaft driving gear, the camshaft driving gear keeps static, no motion is transmitted to the crankshaft, and the crankshaft keeps the position unchanged; therefore, when the first locking piece is loosened, the relative position of the camshaft and the crankshaft can be changed by rotating the crankshaft or the camshaft, and the random adjustment of oil supply timing is realized; after the oil supply timing adjustment is completed, only the first locking piece is required to lock the camshaft connecting shaft and the first clamping shaft. The oil supply device is simple to operate, reduces the adjusting difficulty of oil supply timing, does not need professional staff to adjust, is favorable for ensuring the correctness of the oil supply timing, and reduces the processing difficulty of related parts and the manufacturing cost compared with the prior art.
According to the oil supply timing adjustment transmission device for the marine diesel engine, the pinion gear of the duplicate gear is connected with the bull gear of the duplicate gear in a clamping mode at two sides, so that when the oil supply timing is adjusted, only the third locking piece needs to be loosened; after the oil supply is adjusted in time, the large gear of the duplicate gear and the third clamping shaft are locked through the third locking piece.
The marine diesel engine provided by the invention comprises any one of the marine diesel engine oil supply timing adjusting transmission devices, and has the beneficial effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a sectional view of a marine diesel engine fuel supply timing adjustment transmission according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the meshing transmission of the camshaft driving gear, the duplicate gear small gear, the duplicate gear large gear and the crankshaft timing gear in fig. 1.
The reference numerals in fig. 1 to 2 are as follows:
the camshaft timing gear comprises a camshaft connecting shaft 1, a camshaft driving gear 2, a first clamping shaft 3, a through hole 31, a positioning boss 32, a first locking piece 4, a stud 41, a locking nut 42, a duplex gear pinion 5, a duplex gear bull gear 6, a crankshaft timing gear 7, a crankshaft 8, a bearing seat 9, a bearing 10, an end cover 11, a second clamping shaft 12 and a second locking piece 13.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the invention is to provide the oil supply timing adjustment transmission device for the marine diesel engine, which is convenient for adjusting the oil supply timing of the diesel engine and ensures the accuracy of the oil supply timing. The other core of the invention is to provide the marine diesel engine comprising the marine diesel engine oil supply timing adjusting transmission device, which is convenient for oil supply timing adjustment and beneficial to ensuring the accuracy of oil supply timing.
Referring to fig. 1 to 2, fig. 1 is a sectional view of a marine diesel engine fuel supply timing adjustment transmission according to an embodiment of the present invention; fig. 2 is a schematic diagram of the meshing transmission of the camshaft driving gear, the duplicate gear small gear, the duplicate gear large gear and the crankshaft timing gear in fig. 1.
The embodiment of the invention provides a marine diesel engine oil supply timing adjustment transmission device which comprises a camshaft connecting shaft 1, a camshaft driving gear 2, a first clamping shaft 3, a first locking piece 4, a duplicate gear pinion 5, a duplicate gear bull gear 6, a crankshaft timing gear 7 and a crankshaft 8. Specifically, the camshaft connecting shaft 1 is used for connecting with a camshaft; one side end face of the camshaft driving gear 2 is abutted against the end face of the camshaft connecting shaft 1; the other side end face of the camshaft driving gear 2 is abutted against the first clamping shaft 3; the first clamping shaft 3 is locked or unlocked with the camshaft connecting shaft 1 through the first locking piece 4, namely, the first locking piece 4 is used for locking or unlocking the camshaft connecting shaft 1 and the first clamping shaft 3, and when the camshaft connecting shaft 1 and the first clamping shaft 3 are locked, the camshaft connecting shaft 1 and the first clamping shaft 3 clamp the camshaft driving gear 2; when the camshaft connecting shaft 1 and the first clamping shaft 3 are loosened, the camshaft connecting shaft 1 and the camshaft driving gear 2 can rotate relatively; the duplicate gear pinion 5 is in meshed transmission with the camshaft driving gear 2; the duplex gear big gear 6 is connected with the duplex gear small gear 5; the crankshaft timing gear 7 is arranged on the crankshaft 8, and the crankshaft timing gear 7 is in meshing transmission with the large duplicate gear 6.
During normal work, first locking piece 4 locks camshaft connecting axle 1 and first tight axle 3, makes camshaft connecting axle 1 and first tight axle 3 press from both sides tight camshaft drive gear 2's both sides terminal surface, realizes being connected of camshaft drive gear 2 and camshaft connecting axle 1, when camshaft drive gear 2 rotates, rely on camshaft drive gear 2's both sides terminal surface respectively with camshaft connecting axle 1 and the frictional force of first tight axle 3, can make camshaft drive gear 2 drive camshaft connecting axle 1 and first tight axle 3 rotate together. That is, when bent axle 8 rotated, drive bent axle timing gear 7 and rotate, bent axle timing gear 7 drove duplicate gear big gear 6 and rotates, and duplicate gear big gear 6 drove duplicate gear pinion 5 and rotates, and duplicate gear pinion 5 drove camshaft drive gear 2 and rotates, and camshaft drive gear 2 drove camshaft connecting axle 1 and rotates, and then made camshaft connecting axle 1 drive camshaft rotation, realized the drive of bent axle 8 to the camshaft.
When the oil supply timing of the marine diesel engine needs to be adjusted, the first locking piece 4 loosens the camshaft connecting shaft 1 and the first clamping shaft 3, and at the moment, the pressing force of the camshaft connecting shaft 1 and the first clamping shaft 3 on the end faces of the two sides of the camshaft driving gear 2 disappears, namely, the connection relation between the camshaft driving gear 2 and the camshaft connecting shaft 1 is released, and the camshaft connecting shaft 1 and the camshaft driving gear 2 can rotate relatively; in this case, if the crankshaft 8 is rotated, the crankshaft 8 drives the crankshaft timing gear 7 to rotate, the crankshaft timing gear 7 drives the large duplicate gear wheel 6 to rotate, the large duplicate gear wheel 6 drives the small duplicate gear wheel 5 to rotate, the small duplicate gear wheel 5 drives the camshaft driving gear 2 to rotate, at this time, the camshaft driving gear 2 rotates relative to the camshaft connecting shaft 1, and the camshaft connecting shaft 1 keeps the position unchanged; if the camshaft is rotated, the camshaft drives the camshaft connecting shaft 1 to rotate, at the moment, the camshaft connecting shaft 1 rotates relative to the camshaft driving gear 2, the camshaft driving gear 2 keeps static, no motion is transmitted to the crankshaft 8, and the crankshaft 8 keeps the position unchanged; therefore, when the first locking piece 4 is loosened, the relative position of the camshaft and the crankshaft 8 can be changed by rotating the crankshaft 8 or the camshaft, and the random adjustment of the oil supply timing is realized; after the oil supply timing adjustment is completed, only the first locking piece 4 is required to lock the camshaft connecting shaft 1 and the first clamping shaft 3. The oil supply device is simple to operate, reduces the adjusting difficulty of oil supply timing, does not need professional staff to adjust, is favorable for ensuring the correctness of the oil supply timing, and reduces the processing difficulty of related parts and the manufacturing cost compared with the prior art.
In order to facilitate the locking or unlocking of the camshaft connecting shaft 1 and the first clamping shaft 3 by means of the first locking element 4, in some embodiments the camshaft driving gear 2 is provided with a first central hole and the first clamping shaft 3 is provided with a second central hole; the first locking piece 4 penetrates through the first center hole and the second center hole, the first locking piece 4 is in threaded connection with the camshaft connecting shaft 1, and one end, far away from the camshaft driving gear 2, of the first clamping shaft 3 is pressed tightly. It can be understood that the first central hole and the second central hole mainly play a role of abdication for the first locking piece 4 to pass through so as to connect the first locking piece 4 with the camshaft connecting shaft 1 after passing through the first central hole and the second central hole; the first locking piece 4 is in threaded connection with the camshaft connecting shaft 1, after the first locking piece 4 is in threaded locking with the camshaft connecting shaft 1, the camshaft connecting shaft 1 and the first clamping shaft 3 are locked, at the moment, the first locking piece 4 presses one end, far away from the camshaft driving gear 2, of the first clamping shaft 3, and the first clamping shaft 3 and the camshaft connecting shaft 1 can clamp the end faces of two sides of the camshaft driving gear 2; after the first locking piece 4 is loosened from the threads of the camshaft connecting shaft 1, the camshaft connecting shaft 1 and the first clamping shaft 3 are loosened, at the moment, the pressing force of the first locking piece 4 on one end, away from the camshaft driving gear 2, of the first clamping shaft 3 is released, the camshaft driving gear 2 can be loosened from the first clamping shaft 3 and the camshaft connecting shaft 1, and the camshaft connecting shaft 1 and the camshaft driving gear 2 can rotate relatively.
It should be noted that the specific structure of the first locking member 4 is not limited in this embodiment, as long as one end of the first locking member 4 is threaded and can be connected with the camshaft connecting shaft 1, and the other end of the first locking member 4 can press the first clamping shaft 3. For example, in some embodiments, the first locking member 4 is a bolt.
In view of convenience of adjustment, in some embodiments, the first locking member 4 includes a stud 41 and a lock nut 42, the stud 41 is inserted through the first center hole and the second center hole, and one end of the stud 41 is threadedly coupled with the camshaft connecting shaft 1; the other end of the stud 41 (i.e. the end away from the camshaft connecting shaft 1) is in threaded connection with a locking nut 42, and the locking nut 42 is used for pressing the end of the first clamping shaft 3 away from the camshaft driving gear 2. Therefore, the camshaft connecting shaft 1 and the first clamping shaft 3 can be locked or loosened by screwing the locking nut 42, the operation is simple, and the oil supply timing is convenient to adjust.
In consideration of the stability of the movement, in some embodiments, the marine diesel engine fuel supply timing adjustment transmission further includes a bearing housing 9 and a bearing 10, the bearing housing 9 is used for being connected with a frame of the marine diesel engine; a bearing 10 is provided between the bearing block 9 and the first clamping shaft 3. That is, the present embodiment utilizes the bearing seat 9 to support the first clamping shaft 3 to ensure the accuracy and stability of the position of the first clamping shaft 3, and the first clamping shaft 3 is connected with the bearing seat 9 through the bearing 10 to ensure the rotation of the first clamping shaft 3 relative to the bearing seat 9.
In some embodiments, the bearing 10 is a thrust bearing 10 to carry axial loads.
In addition, in order to improve the lubrication effect on the bearing 10, in some embodiments, the first clamping shaft 3 is provided with a through hole 31 which penetrates radially at a position corresponding to the bearing 10. It can be understood that, after the first locking member 4 is inserted into the first central hole and the second central hole, gaps are respectively formed between the first locking member 4 and the first central hole and between the first locking member 4 and the second central hole, and the through hole 31 radially penetrates through the first clamping shaft 3, that is, the through hole 31 is communicated with the second central hole, so that the first central hole, the second central hole and the through hole 31 function as a lubricating oil passage, and lubricating oil can be made to pass through the first central hole, the second central hole and the through hole 31 to lubricate each bearing 10.
In addition, in order to avoid the locking member being exposed to the outside when the oil supply timing is not adjusted, in some embodiments, the side of the bearing housing 9 facing the first locking member 4 is provided with a detachable end cap 11. That is to say, this embodiment utilizes end cover 11 to close first locking piece 4, avoids first locking piece 4 to expose outside, prevents that first locking piece 4 from corroding by the tide etc., promotes the reliability of first locking piece 4. When the oil supply timing needs to be adjusted, the first lock member 4 is easily operated by detaching the end cover 11.
In addition, in order to facilitate positioning of the camshaft drive gear 2, in some embodiments, at least one of the camshaft connecting shaft 1 and the first clamp shaft 3 is provided with a positioning boss 32, and an outer peripheral portion of the positioning boss 32 is clearance-fitted with the first center hole. That is to say, this embodiment is through setting up location boss 32, during the installation, makes location boss 32 stretch into camshaft drive gear 2's first centre bore, with first centre bore clearance fit, utilizes location boss 32 to play the effect of installation location to camshaft drive gear 2, convenient assembly.
Further, in some embodiments, the marine diesel engine oil supply timing adjustment transmission device further includes a second clamping shaft 12 and a second locking member 13, the second clamping shaft 12 abuts against one side end face of the duplicate gear pinion 5, and the other side end face of the duplicate gear pinion 5 abuts against an end face of the duplicate gear bull gear 6; the second locking piece 13 is used for locking or unlocking the large gear 6 of the duplicate gear and the second clamping shaft 12, and when the large gear 6 of the duplicate gear and the second clamping shaft 12 are locked, the large gear 6 of the duplicate gear and the second clamping shaft 12 clamp the small gear 5 of the duplicate gear; when the bull gear wheel 6 and the second clamping shaft 12 are released, the pinion gear wheel 5 and the bull gear wheel 6 can rotate relative to each other.
That is to say, in this embodiment, the connection mode of the duplicate gear pinion 5 and the duplicate gear bull gear 6 is the same as the connection mode of the camshaft drive gear 2 and the camshaft connecting shaft 1, and during normal operation, the second locking member 13 locks the duplicate gear bull gear 6 and the second clamping shaft 12, so that the duplicate gear bull gear 6 and the second clamping shaft 12 clamp the end faces on both sides of the duplicate gear pinion 5, thereby realizing the connection between the duplicate gear pinion 5 and the duplicate gear bull gear 6, and when one of the duplicate gear pinion 5 and the duplicate gear bull gear 6 rotates, the other of the duplicate gear pinion 5 and the duplicate gear bull gear 6 can be driven to rotate together by virtue of the friction force between the duplicate gear pinion 5 and the duplicate gear bull gear 6. That is, when the crankshaft 8 rotates, the crankshaft timing gear 7 is driven to rotate, the crankshaft timing gear 7 drives the big duplicate gear wheel 6 to rotate, the big duplicate gear wheel 6 drives the small duplicate gear wheel 5 to rotate, the small duplicate gear wheel 5 drives the camshaft driving gear 2 to rotate, the camshaft driving gear 2 drives the camshaft connecting shaft 1 to rotate, and then the camshaft connecting shaft 1 drives the camshaft to rotate, so that the crankshaft 8 drives the camshaft.
When the oil supply timing of the marine diesel engine needs to be adjusted, the second locking piece 13 releases the large gear 6 of the duplicate gear and the second clamping shaft 12, and at the moment, the pressing force of the large gear 6 of the duplicate gear and the second clamping shaft 12 on the end faces of the two sides of the small gear 5 of the duplicate gear disappears, namely, the connection relation between the small gear 5 of the duplicate gear and the large gear 6 of the duplicate gear is released, so that the small gear 5 of the duplicate gear and the large gear 6 of the duplicate gear can rotate relatively; in this case, if the crankshaft 8 is rotated, the crankshaft 8 drives the crankshaft timing gear 7 to rotate, the crankshaft timing gear 7 drives the dual gear big gear 6 to rotate, at this time, the dual gear big gear 6 rotates relative to the dual gear small gear 5, and the dual gear small gear 5 keeps its position unchanged, so that the motion cannot be transmitted to the camshaft; if the camshaft is rotated, the camshaft drives the camshaft connecting shaft 1 to rotate, the camshaft connecting shaft 1 drives the camshaft driving gear 2 to rotate, the camshaft driving gear 2 drives the duplicate gear pinion 5 to rotate, at the moment, the duplicate gear pinion 5 rotates relative to the duplicate gear bull gear 6, and the duplicate gear bull gear 6 keeps the position unchanged, so that the motion cannot be transmitted to the crankshaft 8; therefore, when the second locking piece 13 is released, the relative position of the camshaft and the crankshaft 8 can be changed by rotating the crankshaft 8 or the camshaft, and the oil supply timing can be adjusted randomly; after the oil supply timing adjustment is completed, the second locking piece 13 is only required to lock the large gear 6 of the duplicate gear and the second clamping shaft 12. The oil supply device is simple to operate, reduces the adjusting difficulty of oil supply timing, does not need professional staff to adjust, is favorable for ensuring the correctness of the oil supply timing, and reduces the processing difficulty of related parts and the manufacturing cost compared with the prior art.
That is to say, when the oil supply timing needs to be adjusted, the present embodiment can loosen any one of the first locking member 4 and the second locking member 13, and can realize the adjustment of the oil supply timing, thereby improving the flexibility of the adjustment of the oil supply timing.
Of course, it is also possible that an embodiment of the present invention provides a marine diesel engine oil supply timing adjustment transmission device, which includes a camshaft connecting shaft 1, a camshaft driving gear 2, a duplicate gear pinion 5, a duplicate gear bull gear 6, a third clamping shaft, a third locking member, a crankshaft timing gear 7, and a crankshaft 8. Specifically, the camshaft connecting shaft 1 is used for connecting with a camshaft; the camshaft driving gear 2 is connected with the camshaft connecting shaft 1; the duplicate gear pinion 5 is in meshed transmission with the camshaft driving gear 2; the big duplicate gear wheel 6 is abutted against one side end face of the small duplicate gear wheel 5; the end surface of the other side of the pinion 5 of the duplicate gear is abutted against the third clamping shaft; the third clamping shaft is locked or unlocked with the large gear 6 of the duplicate gear through a third locking piece, namely, the third locking piece is used for locking or unlocking the large gear 6 of the duplicate gear and the third clamping shaft, and when the large gear 6 of the duplicate gear is locked with the third clamping shaft, the large gear 6 of the duplicate gear and the third clamping shaft clamp the small gear 5 of the duplicate gear; when the big duplicate gear wheel 6 and the third clamping shaft are loosened, the small duplicate gear wheel 5 and the big duplicate gear wheel 6 can rotate relatively; the crankshaft timing gear 7 is arranged on the crankshaft 8 and is in meshed transmission with the duplicate gear bull gear 6.
That is, in the present embodiment, the duplicate gear pinion 5 is connected to the duplicate gear bull gear 6 in a manner of clamping on both sides, so that when the oil supply timing is adjusted, only the third locking member needs to be loosened; after the oil supply timing adjustment is completed, the large gear 6 of the duplicate gear and the third clamping shaft are locked only by the third locking piece.
In addition to the marine diesel engine oil supply timing adjustment transmission device, the present invention also provides a marine diesel engine, which includes an oil supply timing adjustment transmission device, and the oil supply timing adjustment transmission device is the marine diesel engine oil supply timing adjustment transmission device disclosed in any one of the above embodiments, and the structures of other parts of the marine diesel engine refer to the prior art and are not described herein again.
The key point of this embodiment is that, the marine diesel engine fuel feeding timing adjustment transmission device disclosed in any one of the above embodiments is adopted, so that the marine diesel engine fuel feeding timing adjustment operation is simple, the fuel feeding timing adjustment difficulty is reduced, adjustment by a professional is not needed, the fuel feeding timing correctness is ensured, and compared with the prior art, the marine diesel engine fuel feeding timing adjustment transmission device reduces the processing difficulty of related parts and reduces the manufacturing cost.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The marine diesel engine fuel supply timing adjustment transmission device and the marine diesel engine provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A marine diesel engine fuel feeding timing adjustment transmission characterized by comprising:
the camshaft connecting shaft (1) is used for being connected with a camshaft;
a camshaft drive gear (2) one end face of which abuts against the end face of the camshaft connecting shaft (1);
the first clamping shaft (3) is abutted against the end face of the other side of the camshaft driving gear (2);
the first locking piece (4) is used for locking or unlocking the camshaft connecting shaft (1) and the first clamping shaft (3), and when the camshaft connecting shaft (1) and the first clamping shaft (3) are locked, the camshaft connecting shaft and the first clamping shaft clamp the camshaft driving gear (2); when the camshaft connecting shaft (1) and the first clamping shaft (3) are loosened, the camshaft connecting shaft (1) and the camshaft driving gear (2) can rotate relatively;
a duplicate gear pinion (5) which is in meshed transmission with the camshaft driving gear (2);
the duplicate gear bull gear (6) is connected with the duplicate gear pinion (5);
and the crankshaft timing gear (7) is arranged on the crankshaft (8) and is in meshing transmission with the duplicate gear bull gear (6).
2. Marine diesel engine fuel supply timing adjustment transmission as claimed in claim 1, characterized in that the camshaft drive gear (2) is provided with a first central bore and the first clamping shaft (3) is provided with a second central bore; the first locking piece (4) penetrates through the first center hole and the second center hole, is in threaded connection with the camshaft connecting shaft (1), and compresses one end, far away from the camshaft driving gear (2), of the first clamping shaft (3).
3. The marine diesel engine fuel supply timing adjustment transmission according to claim 2, characterized in that the first lock member (4) comprises:
the double-end stud (41) penetrates through the first center hole and the second center hole and is in threaded connection with the camshaft connecting shaft (1);
and the locking nut (42) is in threaded connection with one end of the double-end stud (41) far away from the camshaft connecting shaft (1) and is used for compressing one end of the first clamping shaft (3) far away from the camshaft driving gear (2).
4. The marine diesel engine fuel supply timing adjustment transmission device according to claim 2, characterized by further comprising:
the bearing block (9) is used for being connected with a frame of the marine diesel engine;
a bearing (10) arranged between the bearing seat (9) and the first clamping shaft (3).
5. The marine diesel engine fuel supply timing adjustment transmission device according to claim 4, characterized in that the first clamping shaft (3) is provided with a through hole (31) radially penetrating at a position corresponding to the bearing (10).
6. Marine diesel engine fuel supply timing adjustment transmission according to claim 4, characterized in that the side of the bearing housing (9) facing the first locking piece (4) is provided with a detachable end cover (11).
7. The marine diesel engine fuel supply timing adjustment transmission device according to any one of claims 2 to 6, characterized in that at least one of the camshaft connecting shaft (1) and the first clamp shaft (3) is provided with a positioning boss (32), and an outer peripheral portion of the positioning boss (32) is clearance fitted with the first center hole.
8. The marine diesel engine fuel supply timing adjustment transmission according to any one of claims 1 to 6, characterized by further comprising:
the second clamping shaft (12) is abutted against one end face of the duplicate gear pinion (5), and the other end face of the duplicate gear pinion (5) is abutted against the end face of the duplicate gear bull gear (6);
the second locking piece (13) is used for locking or unlocking the duplicate gear gearwheel (6) and the second clamping shaft (12), and when the duplicate gear gearwheel (6) and the second clamping shaft (12) are locked, the duplicate gear gearwheel (5) and the second clamping shaft clamp the duplicate gear pinion (5); when the double gear gearwheel (6) and the second clamping shaft (12) are loosened, the double gear pinion (5) and the double gear gearwheel (6) can rotate relatively.
9. A marine diesel engine fuel feeding timing adjustment transmission characterized by comprising:
the camshaft connecting shaft (1) is used for being connected with a camshaft;
the camshaft driving gear (2) is connected with the camshaft connecting shaft (1);
a duplicate gear pinion (5) which is in meshed transmission with the camshaft driving gear (2);
the duplicate gear big gear (6) is abutted against one side end face of the duplicate gear small gear (5);
the third clamping shaft is abutted against the end face of the other side of the duplicate gear pinion (5);
the third locking piece is used for locking or unlocking the duplicate gear gearwheel (6) and the third clamping shaft, and when the duplicate gear gearwheel (6) and the third clamping shaft are locked, the duplicate gear gearwheel (5) and the third clamping shaft clamp the duplicate gear pinion (5); when the double gear gearwheel (6) and the third clamping shaft are loosened, the double gear pinion (5) and the double gear gearwheel (6) can rotate relatively;
and the crankshaft timing gear (7) is arranged on the crankshaft (8) and is in meshing transmission with the duplicate gear bull gear (6).
10. A marine diesel engine comprising a fuel supply timing adjustment transmission, characterized in that the fuel supply timing adjustment transmission is the marine diesel engine fuel supply timing adjustment transmission of any one of claims 1 to 8 or the marine diesel engine fuel supply timing adjustment transmission of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210603051.8A CN114856835B (en) | 2022-05-30 | 2022-05-30 | Marine diesel engine oil supply timing adjustment transmission device and marine diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210603051.8A CN114856835B (en) | 2022-05-30 | 2022-05-30 | Marine diesel engine oil supply timing adjustment transmission device and marine diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114856835A CN114856835A (en) | 2022-08-05 |
| CN114856835B true CN114856835B (en) | 2023-02-17 |
Family
ID=82641097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210603051.8A Active CN114856835B (en) | 2022-05-30 | 2022-05-30 | Marine diesel engine oil supply timing adjustment transmission device and marine diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114856835B (en) |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5184401A (en) * | 1990-11-30 | 1993-02-09 | Mazda Motor Corporation | Method of assembling valve drive mechanism to engine |
| US7036473B1 (en) * | 2003-10-14 | 2006-05-02 | Grant Goracy | Adjustable cam shaft |
| US7171939B1 (en) * | 2005-09-30 | 2007-02-06 | S&S Cycle, Inc. | Integrated cam drive and oil pump assembly for motorcycle engines and the like |
| CN201292885Y (en) * | 2008-09-03 | 2009-08-19 | 无锡开普机械有限公司 | Gearing unit of engine |
| CN102330599B (en) * | 2011-08-05 | 2012-10-31 | 无锡开普动力有限公司 | Inline pump gear transmission structure for V-type engine |
| DE102012009605A1 (en) * | 2012-05-15 | 2013-11-21 | Man Truck & Bus Ag | Method for compensating a change in the axle distance on the control drive of a valve-controlled internal combustion engine and control drive for a valve-controlled internal combustion engine |
| DE102014009091A1 (en) * | 2014-06-19 | 2015-12-24 | Hilite Germany Gmbh | Swivel motor adjuster for a camshaft |
| CN205478053U (en) * | 2016-02-22 | 2016-08-17 | 山东常林农业装备股份有限公司 | Injection pump cam mounting structure |
| CN206647169U (en) * | 2017-03-28 | 2017-11-17 | 第一拖拉机股份有限公司 | A kind of timing gear of diesel engine system |
| CN107461228B (en) * | 2017-06-22 | 2019-09-13 | 中车大连机车车辆有限公司 | High-power diesel engine camshaft phase method of adjustment |
| CN108036023A (en) * | 2017-11-17 | 2018-05-15 | 无锡开普动力有限公司 | Double high-pressure common-rail fuel pump gear trains |
| CN210661314U (en) * | 2019-09-24 | 2020-06-02 | 潍柴重机股份有限公司 | Backlash adjusting structure |
| CN215057741U (en) * | 2021-04-29 | 2021-12-07 | 广西玉柴动力股份有限公司 | Gear train arrangement structure of engine |
| CN215672453U (en) * | 2021-08-23 | 2022-01-28 | 中船动力研究院有限公司 | Gear transmission device and diesel engine |
-
2022
- 2022-05-30 CN CN202210603051.8A patent/CN114856835B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114856835A (en) | 2022-08-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114856835B (en) | Marine diesel engine oil supply timing adjustment transmission device and marine diesel engine | |
| US6637389B2 (en) | Electrically driven device for angular adjustment of a shaft relative to its drive | |
| US20150013495A1 (en) | Torque Transmission Mechanism | |
| WO2021170003A1 (en) | Variable compression ratio driving structure, engine, and vehicle | |
| KR102390832B1 (en) | Gear device | |
| KR20040026601A (en) | Parts assembling structure to shaft member | |
| JP2008075856A (en) | Engine transmission | |
| JPH1162759A (en) | Distributing type fuel injection pump | |
| CN215804904U (en) | Transmission device of fuel injection pump | |
| CN215633197U (en) | Engine and vehicle | |
| JP4464782B2 (en) | Assembly method of scissor gear mechanism | |
| CN111301598A (en) | Crank pedal mechanism, pedal device and vehicle | |
| JPH032643Y2 (en) | ||
| CN210889973U (en) | Planetary gear shaft limiting structure and differential mechanism assembly applying same | |
| CN220517903U (en) | Wheel end planetary speed reducing mechanism of axle and axle assembly | |
| JPH0710606U (en) | Scissors gear | |
| JPH09310710A (en) | Snap ring | |
| CN213298765U (en) | Long-life sealed stainless steel gearbox body | |
| CN212071726U (en) | Engine flywheel positioning tool | |
| CN219263121U (en) | Dedicated H type bent axle sprocket of mixed engine | |
| CN216922248U (en) | Camshaft convenient to install | |
| JP3096946B2 (en) | Fuel injection timing adjustment device for diesel engine | |
| JP4122125B2 (en) | Pinion mounting structure and series of gear shaft devices adopting this | |
| CN113982749A (en) | Turning mechanism | |
| SU1551895A1 (en) | Reduction gearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |